Amsoil ASL 5W-30, 2043 miles, 05 Toyota Tacoma V6

[yota4me]

vehicle----------05 Toyota Tacoma, 1GR-FE, 4L, 6cyl
OIL-------------5 qt, 13 oz Amsoil ASL 5w-30
oil additive------3 oz AUTO-RX at oil/filter change
oil filter----------Amsoil EAO57
air filter---------Toyota, new at apprx 18,726 miles
miles on oil/oil filter------2,043 (apprx 6 months--May -November)
miles on vehicle--22,856
UOA by Oil Analyzers:

 

[yota4me]

Truck used 1-2 times per week, mostly to work 10-15 miles one way. Some longer trips. Apprx 65% highway. Only a little light towing this OCI. A couple of previous OCI's had a little heavy towing. Previous 2 OCI had some LC20 added. All of these OCI's were with additives added to Amsoil ASL. FP60 used regularly. Use top tier gas-Shell.
Currently running Castrol GTX 5W-30 with 3 oz Auto-RX, & Amsoil EAO57 oil filter. Warranty requires 6 month OCI, so may stick with mostly Castrol GTX w/Auto-RX maintenance dose, til warranty expires. Drained oil saved for later re-use.
Could Auto-RX have freed up some additives?
During this run, once noticed cloud of light blue smoke from exhaust upon startup. To me, that indicated Auto-RX cleaning (around valve stem seals?) allowing oil to temporarily pass through cleaned area. Did not notice mpg increase with Auto-RX in the 100% synthetic oil. However, I do seem to get better mpg when Auto-RX is added to regular motor oil.

 

[Pablo]

To be honest, the 6 month old oil you drained out looks better than a lot of virgin oils. Your engine is boringly clean.

Some folks here have a silly notion that synthetic oils have more wear at low miles (not sure how they came to that conclusion).

Anyway, love to see Castrol as well.

 

[Triple_Se7en]

Is that calcium number a typo? Did you question that maybe it should be a "0" instead of an "8"?

 

[yota4me]

Several of the additives increased, which leads me to think maybe Auto-RX liberated some from the engine metal surfaces.
Virgin Amsoil ASL additive levels are not that high are they?

 

[JohnBrowning]

Look at how low the Zink is for an AMsoil formula so I would say that the Calcium is probably right! THey probably increased it to make up for less ZDDP! Nice does of Boron in their!!!! All looks well.... I doubt you will have any problems with GTX+ARX! should keep it clean especialy witht he low miles driven dureing the 6 months oil change interval!

 

[Cutehumor]

this could go a year easy

 

[yota4me]

I'd really like to compare wear rates with Amsoil (ASL, ATM, ACD, ACD/HDD mix) without LC20 or Auto-RX. I assume wear is primarily from the cold startups. I'm wondering if a thicker cold temperature viscosity synthetic oil (Amsoil ACD, ATM or ACD/HDD mix) would provide less startup wear (more separation of the moving engine parts til engine warm). Pablo's recent UOA with ACD would support this theory, would it not?